Qt/C++ library for encoding and visualization of data in a QR Code symbol. This library consists of a Qt wrapper for libqrencode, and Qt components that are able to visualize the result.

The official libqrencode site is this. And its official repository can be found here.

This Qt library wrapper was developed by Daniel San F. da Rocha. Any questions or suggestions don't hesitate to contact me, I'll be very happy to receive messages and suggestions to this project.

Copyright (C) 2015 Daniel San F. da Rocha

Copyright (C) 2006-2012 Kentaro Fukuchi

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3.0 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library.

• Qt wrapper to libqrencode (QtQrCode and QtQrCodePainter)
• Qt QuickItem (QtQrCodeQuickItem)
• Qt Widget (QtQrCodeWidget)

• You only need Qt 5.3+ and download the source code:

git clone --recursive https://github.com/danielsanfr/qt-qrcode.git

• Build the lib project using Qt Creator (without QTQRCODE_PLUS_FEATURES define), you will be able to use only the class QtQrCode.
• Build the lib project using Qt Creator (without QTQRCODE_PLUS_FEATURES define), you will be able to use all the classes contained in this library.
• Include LIBS += -L{PAHT_TO_LIB} -lqtqrcode in your .pro.
• Include include({PAHT_TO_LIB}../defaults.pri) in your .pro.
• Copy the classes you will need for your project (or QtQrCodeWidget QtQrCodeQuickItem).
• Finally, if you are chosen to use QuickItem, be sure to use QtQrCodeQuickItem::registerQmlTypes(); before calling the load method of QQmlApplicationEngine class.

Ready, now you have everything you need to use this library.